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Finding the Fourth Proportional to 156,279.54, 215,665.56 and 84,659.88

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Solution

The fourth proportional to 156,279.54, 215,665.56 and 84,659.88 is: 116,830.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,279.54 : 215,665.56 = 84,659.88 : x
  2. Step 2: Convert to fraction form
    156,279.54/215,665.56 = 84,659.88/x
  3. Step 3: Cross multiply
    156,279.54x = 215,665.56 × 84,659.88
  4. Step 4: Simplify right side
    156,279.54x = 18,258,220,429.73
  5. Step 5: Solve for x
    x = 18,258,220,429.73/156,279.54
  6. Step 6: Final answer
    x = 116,830.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.